HOW AN ELECTRIC GENERATOR WORKS Electrical generators by definition are devices that convert mechanical energy into electric energy. The mechanical energy in turn is produced from chemical or nuclear energy in various types of fuel‚ or obtained from renewable sources such as wind or falling water. Steam turbines‚ internal-combustion engines‚ gas combustion turbines‚ electric motors‚ water and wind turbines are the common methods to supply the mechanical energy for such devices. Generators
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Chapter 4 First Half Multiple Choice Identify the choice that best completes the statement or answers the question. 1. A net force of 5.0 N moves a 2.0-kg object a distance of 3.0 m in 3.0 s. How much work is done on the object? a. 1.0 J c. 10. J b. 30. J d. 15 J 2. A 0.50-kg sphere at the top of an incline has a potential energy of 6.0 J relative to the base of the incline. Rolling halfway down the incline will cause the sphere’s potential energy to be: a. 12 J c. 3.0 J
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How a Pogo Stick Works The pogo stick is a mechanical device that utilizes the spring’s ability to store energy. In this paper I will explain how the toy uses the laws of physics to provide hours of fun. There are a lot of forces acting on you and the pogo stick as you bounce along. We’ll take an in depth look at all of these forces and what part they play in the overall functioning of pogo sticks. The physical aspects can be broken down into sections to get a better understanding of what is going
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Volunteer work Each nation has many people who voluntarily take care of others. For example‚ many high school and college students in the United States often spend many hours as volunteers in hospitals‚ orphanages or homes for the aged. They read books to the people in these places. Sometimes the students just visit them‚ play games with them or listen to their problems. Other young volunteers work in the homes of sick or old people. They clean up their houses‚ do their shopping or mow their lawns
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SHAMINMENISHA How Water Rockets Work A water rocket works using the same principles as other rockets. There are three main forces in action: thrust (Fapp)‚ drag (Ffr) and weight (w=mg). The water‚ which is forced out by the difference between internal and atmospheric pressure‚ is a reaction mass that provides the thrust. All rockets have a reaction mass‚ which can vary from hot gasses that are expelled when a fuel is burnt (in the Space Shuttle’s SRB’s for example) to water in a water rocket. The
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How the Stock Market Works Why Do Companies Issue Stock? Companies throughout the world issue new stock shares every day. But what is stock‚ and why does a company issue it? To help you to better understand these important concepts in this tutorial we will discuss: What is Capital? Equity vs. Debt Why Do Corporations Issue Stock? Advantages for Stock Holders Let us begin by defining the word capital. What Is Capital? Let’s imagine that you decide to start up your own ice cream shop business
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1.When and where did Durer work? Dura worked during the middle ages‚ and lived in Nuremberg during what we know recognize as its golden age. 2.Who and what was an influence on his artwork? In 1494‚ Durer traveled to Italy to study art‚ Durer was heavily influenced by the Italians‚ and one writer in particular: Vitruvius. Durer was most interested in their efforts to find the mathematical proportions for portraying the perfect figure. One artist Durer drew inspiration from in particular while
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WORK STUDY &WORK MEASUREMENT INTRODUCTION IN 1820S IN ENGLAND‚ THE FIRST EFFORTS TO CUT COSTS AND INCREASE PRODUCTIVITY BEGAN. FREDERICK WINSLOW TAYLOR ( 1881 ) ORGANIZED THE RESEARCH FINDINGS AND DEVELOPED MORE FORMAL METHODS. HE IS CONSIDERED TO BE THE FATHER OF SCIENTIFIC MANAGEMENT. OBJECTIVE OF TAYLOR • ELIMINATE IDLE TIME FOR WORKERS AND MACHINES. • ELIMINATE DUPLICATION OF EFFORT. • STREAMLINE THE FLOW OF WORK THROUGH THE FIRM. • REARRANGE TASK SEQUENCES FOR MORE EFFICIENCY
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Future of Work 1 Work‚ Industry‚ and Canadian Society Chapter One: Capitalism‚ Industrialization‚ and Post Industrial Society Introduction Most Canadians work in bureaucratic organizations today (e.g. hospital: levels‚ policies/procedures‚ medical records) Industrialization: technical aspects of the accumulation and processing of a society’s resources Capitalism: describes key aspects of the economic and social organization of the productive enterprise Industrial Society: a society in which
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used by a Greek task force in battles at just 399 BC. It was described by the historian Diodorus Sicilus as a “mechanical arrow-firing catapult”. Writings show that it was invented by Dionysus‚ the Elder of Syracuse. Mainly used in Greece‚ Rome and by far England and surrounding city-states. As we know‚ catapults were mainly used in the medieval era‚ or rather‚ it is most famous for use in that time‚ which you have probably seen in movies and books. How Does the Catapult Work? There is quite a bit
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